How do I close a running .vit using the X button without getting the save VI dialog?

Question

One solution is to save the running .vit instance to disk before the operator is able to use the X button to close the running VI. This is awkward as I don't need another numerically named copy of the .vit on my disk. Adding a "Quit" button to my .vit front panel is also an option but it would be nice to be able to use the X button instead.

Answer 1

If you have LabVIEW 6.1 or higher, you can use the Event Structure to capture the click of the 'X' button, and choose to ignore it and close the panel.
Configure an Event Case to "This VI..Panel Close?" filter event. (note the question mark) On the right side of this new case, there will be a boolean terminal that will let you discard the event. Open a reference to the VIT and pass this out of the main loop, and use a property node on this reference to close the front panel, then close the reference.
It will go away when you hit the 'X' without prompting to save.
A simple example is attached. You'll either need ot make a change or copy everything to a new VI and run that to prove it doesn't prompt for saving changes. This is in 7.1, Let me know if you need it in an earlier version.
EdMessage Edited by Ed Dickens on 03-03-2005 12:58 PM
Ed Dickens - Certified LabVIEW Architect - DISTek Integration, Inc. - NI Certified Alliance Partner
Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.
Attachments:
Close without Save Prompt.vi ‏25 KB